Knife block



FIG. 1 is a perspective view of a knife block, showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken line showing of slots is for the purpose of illustrating portions of the knife block that form no part of the claimed design. 

CLAIM The ornamental design for a knife block, as shown and described. 